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OpenStudy (anonymous):
The semicircles are congruent to one another with a diameter of 6 inches. What is the perimeter of the sign? Answer about 57 inches about 116 inches about 137 inches about 160 inches
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OpenStudy (anonymous):
OpenStudy (callisto):
perimeter = 2 (pi) r x1/2 x6 +40x2 =56.55 + 80 = 137
OpenStudy (anonymous):
Gotcha! thanks I got the same answrer!
OpenStudy (anonymous):
A wall clock is 12 inches in diameter. The clock has twelve equally spaced numbers. What is the distance around the edge of the clock from 3 to 6? Is this 3pi?
OpenStudy (callisto):
radius = 12/2 = 6 inches distance = 2x6xpi x1/4 = 3pi inches
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OpenStudy (anonymous):
so it is right! thanks!
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